Answer: because it consists of more than one element, which are hydrogen and oxygen in a covalent bond.
Given that the question gives us concentration (M) and volume, we can use these so get moles. remember that Molarity (M)= mol/ Liters, so if we want the moles, then
moles= M x L
moles= 1.13 x 5.60= 6.33 moles KI
now to get the mass in grams, we need the molar mass of potassium iodide (KI) which can be determined using the periodic table and add the masses of each atom.
molar mass KI= 39.1 + 127= 166.1 g/mol
6.33 mol (166 g/ 1 mol)= 1050 grams KI
Answer:
Separation technique used to separate mud and water without heating:
<u>Sedimentation-Decantation</u>
<u></u>
Explanation:
<em>1.The settling of the heavier particle at the bottom when the container is left undisturbed is called </em><u><em>sedimentation.</em></u>
<u><em></em></u>
<u><em>In a mixture of Mud and water :</em></u>
In this process the heavy mud particles settle at the bottom due to their high density .
2. Decantation : It is the process of pouring out the upper clear layer of the light particles.
<u><em>In a mixture of Mud and water :</em></u>
The water is lighter and form a clear layer over the settled mud particles. Hence by decantation the clear water is poured into a clean separate container
Thus mud remain in the bottom and the mixture is separated
People have died over drinking big amounts of water in fraternity initiations and while they where having the radio contest. So no there it's no life after hydration
Answer:- pH is 2.14.
Solution:- Nitrous acid, 
is a weak acid so first of all we solve for 
and then figure out the pH.
the equation is written as:
Initial concentration for the acid is given as 0.120 M. Let's say the change in concentration is x. Then the equilibrium concentrations would be as:
= 
=
Ka for nitrous acid is 
and the equilibrium expression for this would be written as:
![Ka=\frac{[H_3O^+][NO_2^-]}{HNO_2}](https://tex.z-dn.net/?f=Ka%3D%5Cfrac%7B%5BH_3O%5E%2B%5D%5BNO_2%5E-%5D%7D%7BHNO_2%7D)
Let's plug in the values in it.
To make the calculations easy we could ignore for the bottom and the expression becomes:
On cross multiply:
On taking square root to both sides:
So, ![[H_3O^+]=7.3*10^-^3M](https://tex.z-dn.net/?f=%5BH_3O%5E%2B%5D%3D7.3%2A10%5E-%5E3M)
Now we could calculate the pH using the pH formula:
![pH=-log[H_3O^+]](https://tex.z-dn.net/?f=pH%3D-log%5BH_3O%5E%2B%5D)
pH = 2.14
So, the pH of 0.120M nitrous acid is 2.14.
